450
FNCA52 TJSJ 241930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST SUN MAY 24 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-250800-
SOUTHEAST COASTAL PLAINS-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 20 50
TEMP (24H TREND) 72 (-1) 89 (+2) 72 89
RH % (24H TREND) 88 (+1) 50 (-11) 92 58
WIND 20FT/EARLY(MPH) E 16 E 19 G26 E 16 G26 E 17
WIND 20FT/LATE(MPH) NE 14 E 19 G28 E 14 E 17
MIXING HGT(FT-AGL/MSL) 5630 4030
TRANSPORT WND (MPH) E 21 E 21
VENT RATE (KT-FT) 101340 72540
DISPERSION 5 5
DSI 5 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-250800-
SOUTHERN HILLS-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 10 50
TEMP (24H TREND) 68 (-3) 87 (+5) 68 85
RH % (24H TREND) 96 (+5) 58 (-15) 97 67
WIND 20FT/EARLY(MPH) E 14 E 16 G23 E 16 G23 E 16
WIND 20FT/LATE(MPH) E 17 E 16 G23 E 16 E 16
MIXING HGT(FT-AGL/MSL) 6380 4530
TRANSPORT WND (MPH) E 18 E 20
VENT RATE (KT-FT) 102080 77010
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-250800-
NORTH COASTAL PLAINS-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 10 30 60
TEMP (24H TREND) 72 (-1) 89 (+2) 72 88
RH % (24H TREND) 95 (+2) 60 (-12) 96 68
WIND 20FT/EARLY(MPH) E 21 E 18 E 23 E 18
WIND 20FT/LATE(MPH) E 17 E 24 E 17 E 19
MIXING HGT(FT-AGL/MSL) 5540 4270
TRANSPORT WND (MPH) E 22 E 21
VENT RATE (KT-FT) 105260 76860
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-250800-
NORTHERN HILLS-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 20 10 70
TEMP (24H TREND) 69 (-2) 87 (+2) 69 86
RH % (24H TREND) 96 (+1) 61 (-12) 97 71
WIND 20FT/EARLY(MPH) E 18 E 17 E 20 E 17
WIND 20FT/LATE(MPH) E 13 E 21 E 13 E 17
MIXING HGT(FT-AGL/MSL) 7100 4440
TRANSPORT WND (MPH) E 17 E 17
VENT RATE (KT-FT) 106500 66600
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-250800-
WEST COAST-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLEAR PCLDY CLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS NONE TSTMS
CHANCE PRECIP (%) 20 50 0 60
TEMP (24H TREND) 71 (-1) 90 (+1) 72 90
RH % (24H TREND) 93 (+2) 58 (-9) 92 65
WIND 20FT/EARLY(MPH) E 16 E 17 E 17 E 16
WIND 20FT/LATE(MPH) E 16 E 16 E 14 E 17
MIXING HGT(FT-AGL/MSL) 5580 3970
TRANSPORT WND (MPH) E 13 E 15
VENT RATE (KT-FT) 61380 51610
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-250800-
EASTERN INTERIOR-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 30 60 60
TEMP (24H TREND) 70 (-2) 87 (+4) 70 85
RH % (24H TREND) 95 (+1) 62 (-12) 98 69
WIND 20FT/EARLY(MPH) E 17 E 17 G24 E 18 E 18
WIND 20FT/LATE(MPH) E 18 E 17 G25 E 18 E 17
MIXING HGT(FT-AGL/MSL) 6370 4050
TRANSPORT WND (MPH) E 20 E 21
VENT RATE (KT-FT) 108290 72900
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-250800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 50 40 70 60
TEMP (24H TREND) 68 (-2) 82 (+4) 67 81
RH % (24H TREND) 98 (+1) 70 (-11) 100 75
WIND 20FT/EARLY(MPH) E 13 E 14 G23 E 13 G23 E 14
WIND 20FT/LATE(MPH) E 14 E 14 G23 E 14 E 14
MIXING HGT(FT-AGL/MSL) 4770 2890
TRANSPORT WND (MPH) E 22 E 23
VENT RATE (KT-FT) 90630 57800
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-250800-
CENTRAL MOUNTAIN RANGE-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLEAR MCLEAR CLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS NONE TSTMS
CHANCE PRECIP (%) 10 30 0 60
TEMP (24H TREND) 66 (-3) 86 (+6) 66 85
RH % (24H TREND) 98 (+3) 61 (-17) 98 71
WIND 20FT/EARLY(MPH) E 12 E 12 E 13 E 10
WIND 20FT/LATE(MPH) E 12 E 12 E 11 E 11
MIXING HGT(FT-AGL/MSL) 8090 4810
TRANSPORT WND (MPH) E 12 E 15
VENT RATE (KT-FT) 80900 62530
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-250800-
CAYEY MOUNTAIN RANGE-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 30 60 60
TEMP (24H TREND) 69 (-1) 82 (+3) 68 81
RH % (24H TREND) 99 (+1) 68 (-13) 100 78
WIND 20FT/EARLY(MPH) E 12 E 13 G21 E 13 E 13
WIND 20FT/LATE(MPH) E 13 E 14 E 12 E 13
MIXING HGT(FT-AGL/MSL) 5450 3190
TRANSPORT WND (MPH) E 21 E 22
VENT RATE (KT-FT) 98100 60610
DISPERSION 5 5
DSI 5 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-250800-
VIEQUES-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 70 60
TEMP (24H TREND) 75 (-1) 87 (+1) 74 87
RH % (24H TREND) 90 (-2) 63 (-2) 96 65
WIND 20FT/EARLY(MPH) E 20 E 19 G26 E 21 G29 E 20
WIND 20FT/LATE(MPH) E 20 E 19 G26 E 21 E 20
MIXING HGT(FT-AGL/MSL) 4130 3110
TRANSPORT WND (MPH) E 25 E 29
VENT RATE (KT-FT) 90860 77750
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-250800-
CULEBRA-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY MCLEAR MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 70 60
TEMP (24H TREND) 76 (-1) 89 (+2) 76 89
RH % (24H TREND) 88 (-2) 60 (-6) 94 62
WIND 20FT/EARLY(MPH) E 20 E 19 G26 E 21 G29 E 21
WIND 20FT/LATE(MPH) E 20 E 19 G26 E 21 E 20
MIXING HGT(FT-AGL/MSL) 3950 3250
TRANSPORT WND (MPH) E 26 E 28
VENT RATE (KT-FT) 90850 78000
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-250800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 0 20 0 50
TEMP (24H TREND) 72 (-2) 90 (+2) 73 89
RH % (24H TREND) 88 (+3) 53 (-8) 88 58
WIND 20FT/EARLY(MPH) E 20 E 21 E 23 E 21
WIND 20FT/LATE(MPH) E 13 E 23 E 17 E 23
MIXING HGT(FT-AGL/MSL) 5490 4430
TRANSPORT WND (MPH) E 21 E 23
VENT RATE (KT-FT) 98820 88600
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-250800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 50 50
TEMP (24H TREND) 75 (-1) 86 (+1) 75 86
RH % (24H TREND) 88 (0) 65 (-4) 94 68
WIND 20FT/EARLY(MPH) E 23 E 19 G26 E 21 G29 E 21
WIND 20FT/LATE(MPH) E 21 E 20 E 21 E 20
MIXING HGT(FT-AGL/MSL) 3780 3280
TRANSPORT WND (MPH) E 26 E 28
VENT RATE (KT-FT) 86940 78720
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-250800-
ST CROIX-
330 PM AST SUN MAY 24 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 50 60
TEMP (24H TREND) 75 (-1) 87 (+1) 74 87
RH % (24H TREND) 89 (-1) 66 (-5) 96 67
WIND 20FT/EARLY(MPH) E 20 E 19 E 21 E 19
WIND 20FT/LATE(MPH) E 20 E 19 E 20 E 19
MIXING HGT(FT-AGL/MSL) 4630 3300
TRANSPORT WND (MPH) E 25 E 28
VENT RATE (KT-FT) 101860 79200
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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